alloc_pages_exact_node naming makes some people misleading.
They considered it following as.
"This function will allocate pages from node which I wanted
exactly".
But it can allocate pages from fallback list if page allocator
can't find free page from node user wanted.
So let's comment this NOTE.
Actually I wanted to change naming with better.
ex) alloc_pages_explict_node.
But I changed my mind since the comment would be enough.
If anybody suggests better name, I will do with pleasure.
Cc: Mel Gorman <mel@xxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Bob Liu <lliubbo@xxxxxxxxx>
Signed-off-by: Minchan Kim <minchan.kim@xxxxxxxxx>
---
include/linux/gfp.h | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index b65f003..7539c17 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -288,6 +288,11 @@ static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask,
return __alloc_pages(gfp_mask, order, node_zonelist(nid, gfp_mask));
}
+/*
+ * NOTE : Allow page from fallback if page allocator can't find free page
+ * in your nid. Only if you want to allocate page from your nid, use
+ * __GFP_THISNODE flags with gfp_mask.
+ */
static inline struct page *alloc_pages_exact_node(int nid, gfp_t gfp_mask,
unsigned int order)
{
--
1.7.0.5
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxxx For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>